--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/GraalCompiler/src/com/sun/c1x/ir/Compare.java	Tue Jun 07 15:56:21 2011 +0200
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2011, 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.c1x.ir;
+
+import com.oracle.graal.graph.*;
+import com.sun.c1x.debug.*;
+import com.sun.c1x.util.*;
+import com.sun.cri.ci.*;
+
+public final class Compare extends Value {
+
+    private static final int INPUT_COUNT = 2;
+    private static final int INPUT_X = 0;
+    private static final int INPUT_Y = 1;
+
+    private static final int SUCCESSOR_COUNT = 0;
+
+    @Override
+    protected int inputCount() {
+        return super.inputCount() + INPUT_COUNT;
+    }
+
+    @Override
+    protected int successorCount() {
+        return super.successorCount() + SUCCESSOR_COUNT;
+    }
+
+    /**
+     * The instruction that produces the first input to this comparison.
+     */
+     public Value x() {
+        return (Value) inputs().get(super.inputCount() + INPUT_X);
+    }
+
+    public Value setX(Value n) {
+        return (Value) inputs().set(super.inputCount() + INPUT_X, n);
+    }
+
+    /**
+     * The instruction that produces the second input to this comparison.
+     */
+    public Value y() {
+        return (Value) inputs().get(super.inputCount() + INPUT_Y);
+    }
+
+    public Value setY(Value n) {
+        return (Value) inputs().set(super.inputCount() + INPUT_Y, n);
+    }
+
+    Condition condition;
+    boolean unorderedIsTrue;
+
+    /**
+     * Constructs a new If instruction.
+     * @param x the instruction producing the first input to the instruction
+     * @param condition the condition (comparison operation)
+     * @param y the instruction that produces the second input to this instruction
+     * @param graph
+     */
+    public Compare(Value x, Condition condition, Value y, Graph graph) {
+        super(CiKind.Illegal, INPUT_COUNT, SUCCESSOR_COUNT, graph);
+        assert (x == null && y == null) || Util.archKindsEqual(x, y);
+        this.condition = condition;
+        setX(x);
+        setY(y);
+    }
+
+    /**
+     * Gets the condition (comparison operation) for this instruction.
+     * @return the condition
+     */
+    public Condition condition() {
+        return condition;
+    }
+
+    /**
+     * Checks whether unordered inputs mean true or false.
+     * @return {@code true} if unordered inputs produce true
+     */
+    public boolean unorderedIsTrue() {
+        return unorderedIsTrue;
+    }
+
+    /**
+     * Swaps the operands to this if and reverses the condition (e.g. > goes to <=).
+     * @see Condition#mirror()
+     */
+    public void swapOperands() {
+        condition = condition.mirror();
+        Value t = x();
+        setX(y());
+        setY(t);
+    }
+
+    @Override
+    public void accept(ValueVisitor v) {
+    }
+
+    @Override
+    public void print(LogStream out) {
+        out.print("comp ").
+        print(x()).
+        print(' ').
+        print(condition().operator).
+        print(' ').
+        print(y());
+    }
+
+    @Override
+    public String shortName() {
+        return "Comp " + condition.operator;
+    }
+
+    @Override
+    public Node copy(Graph into) {
+        Compare x = new Compare(null, condition, null, into);
+        x.unorderedIsTrue = unorderedIsTrue;
+        x.setNonNull(isNonNull());
+        return x;
+    }
+}